TEF (thermic effect of food): optional profile toggle, 10% of intake,
introduced so maintenance is preserved - base = BMR*actLevel*(1-tef),
then +tef*intake. On a deficit day expenditure is slightly lower (eat
less, digest less), which keeps the existing calibration rather than
inflating the deficit. Day summary shows "расход: база + переваривание
+ активность"; the 7-day trend uses it too.
New activity_type "vr" (Руки/VR): HR-only like "workout" (no GPS, kcal
from HR), tracked separately. GPS.isHrOnly() replaces the hardcoded
"workout" checks so both kinds share the no-GPS record/detail path.
4aiman
c7dd588f37